Evaluate lim x
- evaluate lim x log x
- evaluate lim x 0 cos2x-1/cosx-1
- evaluate lim x tends to 0 sinx/x
- evaluate lim x tends to a root a+2x
- evaluate lim x 0 cosecx-cotx
- evaluate lim x tends to 0 (x+1)^5-1/x
- evaluate lim x tends to 1 x^15-1/x^10-1
- evaluate lim x tends to 0 tanx-sinx/x^3
- evaluate lim x infinity
- evaluate lim x approaches infinity
